Fast Reliable Residential or Commercial Cooling and Air Conditioning System Installation and Service in Valparaiso and Northwest Indiana.

Cooling Your Home or Business

When it comes to cooling your home or business, there are many options. Whether it’s installing a new system, or upgrading and servicing your current AC system, JL Mechanical has the experience and integrity to give you the best and most cost-effective solutions.

Quality work that is Guaranteed
JL Mechanical provides all of our customers with a No Breakdown Guarantee!

JL Mechanical truck at residential home
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What sets JL Mechanical apart?

We provide quality customer service with our dedicated staff to guarantee our certified field technicians will resolve any concerns or issues promptly. We have grown our business and reputation by providing home and business owners with honest, affordable, and professional heating and cooling products and services.

Installation of HVAC Equipment

With experienced technicians, we work with you to find a solution that will fit your home or business, as well as your budget. We work with major heating and furnace companies that offer you a wide variety of systems and brands to choose from. A certified JL Mechanical heating technician will work with you to provide a quote for all parts and labor. And will only begin work once that is approved. Our turnaround time is quick and our work and equipment is guaranteed.

Service and Maintenance

We have some of the best technicians in the business. Through experience and using cutting-edge equipment, we can quickly diagnose and resolve issues with minimal down time of your heating system. We also believe that preventative maintenance can reduce unplanned system failures. Our representatives will help you select a service plan that works best for you, keeping your heating system running at peak performance.


Fully Licensed & Insured
HVAC Quality Installation Standard
EPA Certification (Section 608)
R-410A Certification
HVAC Excellence Certification

Worry Free HVAC Living Membership Plans


Membership Plan
  • 2 maintenance / precision tune-up visits per year including:  1 Air Conditioning and 1 Heating
  • Inspection and cleaning of your system during service visits (air filters included)
  • 24-hour Emergency Service
  • Priority Scheduling
  • 15% discount on labor due to equipment failure
  • No Overtime Fees
  • 10% discount on all parts and materials for repairs and upgrades
  • No Breakdown & Satisfaction Guarantee
  • Exclusive Member Promotions


Membership Plan
  • 2 maintenance / precision tune- up visits per year including: 1 Air Conditioning and 1 - Heating
  • Inspection and cleaning of your system during service visits (air filters included)
  • 24-hour Emergency Service
  • Priority Scheduling
  • 5% discount on all parts and materials for repairs and upgrades
  • No Breakdown and Satisfaction Guarantee
  • Exclusive Member Promotions

Heating and Cooling Brands We Service and Install

Frequently Asked Questions About Cooling, Air Conditioning, Central Air, Furnace and Air Quality Problems

Here are a few frequently asked questions about heating systems in your home or business.

How do I know if it’s time to replace my furnace or cooling unit?

If your central air or cooling system is not working properly, there may signs like increased energy bill, strange noises, poor airflow, or decrease in cool air. Some of these could be repaired, but it also might mean it’s time to replace the central air or furnace. There might be simple repairs that can solve the issue, but it’s best to call a JL Mechnical representative for an inspection.

How often should I have my air cooling system inspected?

We usually recommend that you have your cooling system inspected once every year or two. But if you suspect there are problems, you should call us to inspect your unit for problems. It could be something simple, or you may need a new unit.

How often should I replace my furnace filter?

To keep your cooling and air system running at peak performance, you should change your air filter once a month. A dirty or clogged filter will cause the unit to work harder and shorten its life.

What kind of air conditioning system should I get?

JL Mechanical technicians will work with you to recommend a good cooling unit and system that fits the needs of your home or business. We also work with main industry heating and cooling brands so we will provide you with the best quality air unit that fits your budget.

How long will my central air unit last?

There are many variables that impact the life expectancy of an air system. That’s why it’s important to change the filter often and schedule yearly maintenance of the unit. Some units may last from 15-20 depending on use and care. JL Mechanical has warranties for our work as well as certain air system units.

Mechanical LLC service truck outside of home.


JL Mechanical offers financing options for the service and installation of heating systems, furnaces, air conditioners, water heaters and air purification systems in Valparaiso and Northwest Indiana. We understand that major repairs can come unepectedly, contact us today, or talk to your JL Mechanical representative about financing options.

For both residential and commercial work,

JL Mechanical is Indiana’s qualified and reliable heating and air conditioning service provider.